Filter



2 Sheetg-Sheat l IN VENTOR Ww/MZ/h/@ BY WMM 62 ATTORN EY F. E. HEWEL FILTER Filed April 20, 1957 Feb. 25, 1941.

Feb. 25, 1941.A F, B, HEWEL 2,233,131

FILTER Filed April 20,1957 r 2 Sheets-Sheet 2 1 wnNEssEs; 147/3115" 72 lNvx-:NToR

ATTORN Patented Feb. 25, `1941 UNITED STATES PATENT 'OFFICE 8 Claims.

`My invention relates to filtering devices for various fluids, such as gasoline and oil, and particularly to oil-iiltering devices for trucks and automobiles.

One object of my invention is to provide a relatively simple, but effective, oil-ltering-device for the purpose in question and one which may be readily and quickly assembled and disassembled.

Another object of my invention is to provide a filtering device of the metal-edge-iilter type in which a stationary and a cooperating movable edge filter structure are provided, the relative movement thereof being eiected while retaining a predetermined angular relation or alinement of the parts.

Another object of my invention is to provide a cooperating stationary and movable edge-filter device in which a telescopic relation of parts in- ;volving a movable member obtains; together with, preferably, a key and slot arrangement for retaining the desired alinement of parts during the relative movement of the lter members.

Av further object of my invention is to provide anloil-ltering device including a container with an opening at one end, acomposite hollow structure adapted to partially close the opening and a composite base structure disposed within the hollow structure to close the remainder of the opening, together with locking means interposed between the container and the hollow portion and between the base structure and the hollow structure.

, Another object of my invention is to provide an edge-:lter structure disposed within a hollow member, together with a container for ltering material resting on the filter structure and in `part within the hollow member.

AAnother object of my invention is to provide ,a flexible container comprising one or more pockets 4for acid neutralizer material, together with a iiap extending `over the open end or ends of the pocket or pockets', the pocket or pockets and flap being rolled around an axis extending substantially parallel to the pocket or pockets.

Other objects of my invention will become evident from the following detailed description taken in conjunction with the accompanying drawings, wherein:

Figure 1 is a view in longitudinal section `of an oil-filtering'device constructed in accordance with my present invention; and

Figs. 2 to 16, inclusive, are views, partially in elevation and partially in section, of various parts of the apparatus that is shown in Fig. 1.

Referring to the drawings', the structure there shown vcomprises an outer container I, an inner 'container 2, a composite base and filter-holding structure' 3, a closure or cap 4 for the two containers, a cooperating stationary and movable metal-edge filter structure 5 associated with the composite base structure 3, a plurality of locking means 6 and 1 for holding certain of the abovementioned parts removably in place, a flexible container `or bag 8 disposed within, the inner container 2 for containing acid neutralizer material, and a roll 9 of cloth, preferably canton as subsequently described. A small bottom openl ing I is also provided, for drainage purposes, as subsequently described, a pipe II being inserted therein. l

The inner container 2, shown also in Fig. y3,

comprises an annular plate I having'a diameter larger than the opening I3 in the bottom of outer container I, together with a hollow cylindrical portion I6 extending downwardly` from the plate I5 and having a `plurality of spaced lugs I'I on its outer wall and a plurality of spaced lugs I8 at the bottom of its inner wall. The cylindrical portion IB may be secured to the plate I5 in any suitable manner as by welding iillets I9 and 20.

The upper portion of the inner container 2 comprises an elongated substantially cylindrical member 2l which is likewise rigidly secured to the plate portion I5 by means of a welding fillet 22. A plurality of pipes or conduits 23 and 24 are welded or otherwise suitably secured to substantially opposite portions of the internal wall of the cylindrical container 2I,-the pipe 23 terminating at the top in a bell mouth 25 and extending downwardly beyond the plate portion `I5, while the pipe 24 has Aa right-angle bend at its lower end and terminates just above the plate portion I5. The purpose of these pipes or passages with respect to iiltration of the oil will be subsequently set forth. 1 y

The composite base structure 3, also shown in Figs. 4 and 5, comprises a plate or base proper 2:1 having an internal U-shaped passage 28 therein of substantially shallow U-shape and also having a threaded opening 29 extending therethrough for receiving a drain pipe 26. A tubular member or sleeve 30 is secured as by welding iillet 3| to the central portion of the` arm of the U-shaped opening or passage l23 in the base 21. In addition, a key or guide 33 is Q0 secured to one external wall of the tubular member 3l) for a purpose to be set forth.

A substantially cylindrical member 34 is mounted on the upper face of the base 21, being secured thereto as by welding llets 35. This member 34 substantially concentrically surrounds the central tubular member 30, and the outer arm of passage 28 in the base 21 is disposed just beyondthe adjacent wall of the cylindrical member 34 for a purpose; to be set forth. A cap 38 tightly ts over the top edge of cylinder 34.

A plurality of openings 31 are arranged in the cylinder 34, preferably in a substantially horizontal circle as clearly shown in Fig, 4, some distance below the top edge of the cylinder 34, for a purpose to be described.

An annular metal screen 39 is preferably disposed near the top of outer container I.

The cap or cover member 4, also shown in Fig. 6, constitutes a shallow cylinder with a top face 40, a plurality of inclined slots 4I being cut in the cylindrical wall, while two openings 42 and 43 are provided in the top face for respectively receiving outlet pipe 44 and inlet pipe 45, as shown in Fig. 1.,

The cooperating lter structure 5, shown also in Figs. '1 to 10, inclusive, comprises a stationary metal-edge filter structure 46 which is held by pins or by a force fit near the upper end of cylinder 34, which is mounted on base 21. The filter structure 46 comprises a peripheral ring 41 with which is preferably integrally secured a plurality of substantially parallel strips or bars 49 which extend edgewise in a substantially vertical direction.

The movable metal-edge filter structure 49, which cooperates with the stationary edge filter structure 46, comprises a plurality of strips or bars 50 which are staggered with respect to the strips 48 in order that they may interleave with the same, these strips 50 being welded or otherwise mounted on a transversely extending bar I which, in turn, is suitably secured to the upper edge of a small diameter cylinder or telescopic member 52 having a longitudinal slot 53 in one side thereof for cooperating with the key member 33 in tubular member 39, over which telescopic member 52 slides. The member 52 is closed at its upper end as shown in Fig. 1.

The locking means 6, illustrated also in Figs. 11 and 12, is shown as comprising a ring or annular member 56 having in its internal edge a plurality of spaced, inclined lugs or cams 51 adjacent to spaces or notches 54 and is also provided with notches 58 in its outer periphery. The purpose of the cam members 51 is to cooperate with lugs I1 on the outer wall of cylindrical portion I6 of inner container 2, While the purpose of the outer notches 58 is to provide a hold for a spanner'wrench or thev like.

The locking means 1, illustrated also in Figs. 13 and 14, is shown as comprising a ring or annular member 59, the outer edge of which is provided with a plurality of inclined. lugs or cam members 6U adjacent toy spaces or notches 62 for the purpose of suitably locking with internal lugs I8 in the cylindrical portion I6 of the inner container 2. The rings 59 are also provided with a plurality Vof spaced holes 6I for the purpose of being engaged by a spanner wrench or the like. ,Y

The ilexible ltering material container 8, shown also in Figs. and 16, comprises a layer of textile material 64, preferably canton annel,

which is folded along a line 66 and is provided with a plurality of substantially parallel seams 61, thereby providing a plurality of adjacent pockets 68 in which suitable acid-neutralizing ltering material', such as fullers earth, may be disposed. The upper portion of the container shown in Fig. 15 thus comprises a single thickness iap 1D which may be folded over the pockets 68, when lled, along the line indicated by the reference character 1I, corresponding to the top edge 69 of the pockets 68, and then the entire container or bag may be rolled into a spiral, along an axis extending substantially parallel to the pockets, as indicated in Fig. 16 by the reference character 12, this roll then being placed in the position shown in Fig. 1 resting on the stationary edge-filter structure 46.

The roll 9 of cloth, preferably canton flannel, is wound around inner container 2 and fills the annular space between containers I and 2, constituting a cloth edge filter for this space.

The assembly of the various parts shown in Figs. 2 to 16, inclusive, may be set forth as follows: The composite inner container 2 is inserted downwardly into the outer container I, so that the lower cylindrical portion I6 extends through the opening I3 in the bottom of the outer container, while the outer part of the horizontal or plate portion I5 rests upon a suitable annular gasket 13 which is disposed outside the upper part of the cylindrical portion I6, the gasket thus being disposed to provide a fluid-tight junction between the outer container I and the plate portion I5.

The composite base structure 3 is then inserted upwardly through the bottomy opening I3 in the outer container I and within the inner container 2, the angular location of the base structure being such that the internal. passage 28 thereof registers with the lower end of pipe or passage 23 of the inner container 2, which pipe extends along the cylinder 34. To provide a fluid-tight junction between the plate portion I5 of inner container 2 and base structure 3, a second gasket 14 is disposed between these two parts, as shown in Fig. 1.

The outer container I, inner container 2 and composite base structure 3 may then be rigidly assembled together by means of locking means or rings 6 and 1, the ring 6 being placed so that the internal notches 54 pass over the spaced lugs I1 of the lower cylindrical portion I6 of inner container 2 and the ring is then given a partial turn so that the cams or lugs 51 wedgingly engage the lugs I1 and thus lock the outer container I to the cylindrical portion I6.

Likewise, `the inner locking ring 1 is placed so that its outer notches 62 pass over the spaced internal lugs I8 of cylindrical portion I6 and the ring is then given -a partial turn so that the cams or inclined lugs 6D wedgingly engage the lugs I 8, thus locking the base member 3 to the lower cylindrical por-tion I6.

It will be seen that the inner container 2', with its horizontal plate pontion l5, thus covers a portion of lthe open-ing I3 in the .bottom of outer container il, While the base structure 3 covers the remainder of this opening, the parts being rigidly locked in position and being provided with suitable gaskets -to provide {duid-tight joints.

The lower or removable edge-filter member 49 is then inserted downwardly within the inner con- .tainer 2 to slip over the upwardly-projecting tubular member 39, care being taken to see that the u slot 53 in the edge-ulterstructure registers with the guide or lug 33 in the tubular member.

Theupper or stationary edge filter structure 46 is then placed in position,as shown in Fig. 1, being held by suitable pins or by a force fit, as previously mentionedi The cap 38 is then placed over the upper -edge of cylinder 34.

The flexible bag or container I8, after the pockets 58 thereof have been lled with suitable acid-neutralizing material and after it has been Wrapped into a roll or spiral, as shown in Fig. 16, is then inserted within the inner container i2 until the lower edge thereof rests upon the cap 38 of cylinder 3,4, as indicated by Ithe dotted lines in Fig. 1.y

The cloth edge filter 9 or roll of canton flannel is then forced into the .annular space between inner con-tainer 2 and outer container I.

The cap or cover -4 may then be placed in position, care being taken to aline the stub end of inlet pipe 45 with the bell mouth 25 of pipe 23, while at the same -time placing the slots 4I in alinement with thelugs I4 on the container, after which a slight turn will lock .thecover in place.

f' I-t will .be appreciated that the reverse procedure may be followed for disassembly purposes, so that a quick and easy a-ssembly and disassembly is provided. It is thus a simple matter to clean the lter metal parts and replace the cl-oth parts 8 .an-d 9.

Assuming that the oil-filtering struc-ture shown in Fig. 1, after being assembled las noted above, is connected to the oil-circulating system of an internal combustion engine or the like, the pipe being connected to be the inlet for the oil to be filtered and the pipe 444 being connected to be the outlet therefor, the path of the oil, which is indicated by arrows, is as follows: From the inlet pipe 45 through .pipe or passage 23 of the inner container 2, to passage 128 of the base structure 21, to vertical passage 36 within the .tubular member 30 :and thence outwardly through openings 32 which are uncovered by upward movement of the member 52 and then upwardly through the movable iilter structure `4'I and stationary filter structure -46 and holes 31 to the acid-neutralizingrnateri-al-containing bag 8. After throughthis bag or container 8, the oil flows into the top of pipe or passage 24 of the inner container ;2 Iand -thence downwardly through the pipe, being `discharged at the lower end thereof near `the bottom of outer container I, whence the oil Atravels Vupwardly through the roll 9 of vcanton flannel and, after passing through screen 39 near the top of the container, ows outwardly through outlet pipe 44 to the engine.

The increase and decrease of the oil level in the inner container 2 duri-ng the operation of the internal combustion engine causes the movable edge filter -4'1 to telescopically slide up and down on the tubular member 30 vdue to oil pressure acting on the upper lclosed en-d of the member 52, thereby providing the well-known metal-edge-filtering action whenever the strips of the movable iilter structure 419 interleave with the stationary strips `48 of the stationary filter structure '46. In order .to provide any necessary bypass or outlets, the holes 32 in the tubular member 30 are provided. When the oil pressure decreases, the member 52 drops to thereby again close the openings 32.

The illustrated structure embodies a double sump to catch water, sludge, etc.y One sump is the bottom of the annular space between tubular member 30 and cylinder 34, whereby sludge or water may settle before the oil reaches the metaledge-filter structure J5 and be `drained olf when desired through pipe 26. The other sump is the bottom of the annular space between inner container 2 :and the walls of -outer container I, whereby sludge -or water still carried by the oil may settle before the oil travels upwardly through cloth ed-ge filter 9 land be drained when desired through pipe II. The elimination of some dirt and sludge by the settling process in these sumps serves to prolong the life of the cloth container 8 and cloth roll 9.

It will be seen that I Ihave thus provided a complete oil-ltering structure which will remove sludge :and other mechanical impurities by reason of the cooperating stationary .and movable edgelter structures I have provided, while acid in lthe oil is removed by reason of its passage through the container 8 for :acid-neutralizing material. The sludge which drops to the bottom of the inner cylinder 34 and outer container I and is not removed |through drain ypipes 25 and iIrI may be removed by unlocking the rings 6 and 1 and removing the base structure 21 and inner container 2 after the oil in the apparatus has been drained out by means of the drain pipes. For drainage purposes, it will be understood that normally closed valves or pet-cocks (not shown) are provided in .pipes 2.6 a-nd I1.

On the other hand, when it is desired to renew the acid-neutralizing material, it is merely necessary to remove the cover 4, pull out the container 8, remove the used material from the pockets LIii! thereof and refill them with new lacid-neutralizing material.

By reason of the provision of the composite structures 2 and3, a minimum number of readily assembled parts is provided which minimizes` the necessary labor and possible loss of parts in connection with the disassembly and reassembly of the apparatus.

I do not Wish to be restricted to the specific structural details or arrangement of parts herein set forth, as various modifications thereof may be effected without `departing from the spirit and scope of my invention. I desire, therefore, that only such limitati-ons shall be imposed thereon as are indicated in the appended claims.

I claim as my invention:

1. A device comprising a container having an opening at one end, a structure having a plate portion adapted to partially close said opening and having a hollow substantially cylindrical portion extending therethrough, a base structure disposed within said hollow portion to close the remainder of said opening, a substantially cylindrical member extending from said plate portion into said container, an inlet pipe secured to one wall of said cylindrical member, outlets between said cylindrical member and said container and leading from the container; a tubular member secured to said bas-e structure and extending within said substantially cylindrical member, and a filter structure mounted on said tubular member within said cylindrical member, said base structure having an internal passage extending between one end of said inlet pipe and the passage through said tubular member thereby to pass fluid through said lter structure and said outlets.

2. A device comprising a container having an drical member extending from said plate portion into said container, an inlet pipey secured to one wall of said cylindrical member, outlets between said cylindrical4 member and said container and leading from the containen, a tubular member secured to said base structure and extending within said substantially cylindrical member, a iilter structure mounted on said tubular member within said cylindrical member, said base structure having an internal passage extending between one end of said inlet pipe and the passage throughv saidv tubular member thereby to pass fluid through saidA iilter lstructure and said outlets, a locking ring interposed between said container and the outer side of said cylindrical portion, and a second locking ring interposed between said base structure and the inner side of said cylindrical portion.

3. In a nltering device, a hollowmember, a stationary edge-iilter structure disposed therewithin at a distance from one end thereof, a container for acid'neutralizer material resting on said filter structure between it andsaid end, an inlet leading into saidhollow member at the end opposite said co-ntainer, andan outlet from said hollow member leading from said one end.

4. In a filtering device, a substantially cylindrical hollow member, a. stationary edge-filter structure disposed therewithin at a distance from one end thereof, a roll-ed textile material container for acid neutralizer material resting on said filter structure between it and said end, an inlet leading into said hollow member below said filter structure, and an outlet from said hollow member leading from above said container.

5. In a fluid-filtering device, a fiiter chamber, a stationary edge filter and a movable edge filter vertically disposed in said filter chamber, said movable edge lter being mechanically positioned to interleave with said stationary edge lter, a first guiding member having a passage and fluidpassing openings therein communicating with said passage and with said chamber and being flxedly secured within said chamber, a second guiding member having a telescopic engagement with said first guiding member and being slidable therealong to uncover said openings and having a closed upper portion, said movable edge filter being mounted on said second guiding member, a iiuid inlet for supplying iiuid to be filtered to said passage to flow through said openings to the chamber below said movable edge filter, a fluid outlet from the chamber above the stationary edge filter, said movable edge filter being movable up and down by increase and decrease of pressure of fluid supplied through said fluid inlet to act on said closed upper portion of said second guiding. member.

6. In a fluid-filtering device, a iilter chamber, a stationary edge filter and a movable edge filter vertically disposed in said iilter chamber, said movable edge filter being mechanically positioned to. interleave with said stationary edge filter, a i

iirst guiding member iixedly secured within said chamber and having a passage therein and openings communicating With said passage and with said chamber, a second guiding member having a telescopic engagement with said first guiding member and being slidable therealong and having a closed end, said movable edge filter being mountedv on` saidr second guiding member, a iiuid inlet forsupplyi'ng fluid to be iiltered to said passage within said iirst guiding member, said openings' passing fluid from said passage into the passage to flow through said openings to the chamber and below said movable edge filter, and a iiuid outlet from the chamber above the stationary edge filter, said movable edge filter being movable up and down by increase and decrease of pressure of iiuid supplied through said fluid inlet to act on said closed end of said second guiding member.

7. Ina fluid-filtering device, a filter chamber, a stationary edge filter and a movable edge iilter vertically disposed in said iilter chamber, said movable edge filter being mechanically positioned to interleave with said stationary edge iilter, a first guiding member having a passage and iiuid passing openings therein communicating with said passage and with said chamber and being fixedly secured within said chamber, a second guiding member having a telescopic engagement with said first guiding member and being slidable therealong to uncover said openings and having a closed upper portion, said movable edge filter being mounted onsaid second guiding member, cooperating means on the respective guiding members for maintaining the desired interleaving alinement of said edge filters during such slidable movement, a fluid inlet for supplying iiuid to be ltered to saidv passage to flow through said openings to the chamber below said movable edge filter, and a fluidY outlet from the chamber above the stationary edge filter, said movable edge filter being movable up and down by increase and decrease of pressure of uid supplied through said iiuidY inlet to act on said closed upper portion of said second guiding member.

8-. In a fluid-filtering device, a lter chamber, a stationary edge filter and a: movable edge lter vertically disposed in said filter chamber, said movable edge lter being mechanically positioned to interleave with said stationary edge filter, a iirst guiding member iixedly secured Within said chamber and having a passage and fluid-passing' openings therein communicating with Said passage and with said chamber, a second guiding member having a telescopic engagement with said first guiding member and being slidable therealong to uncover said openings and having a closed end, said movable edge filter being mounted on said second guiding member, said second guiding member having a slot extending in the direction of such slidable movement and said. rst guiding member having a key operable in said slot during such slidable movement for maintaining the desired interleaving alinement of said edge filters, a fluid inlet for supplying iiuid to be iilter-ed to said passage to iiow through said openings to the chamber below said movable edgefllter, and a iiuid` outlet from the chamber above. the stationary edge filter, said movable edge lter being movable up and down by increase and decrease of pressure of iiuid supplied through said iiuid-inl-et to act on said closed end of said second guiding member.

FRANK B. HEWEL. 

